Disk harrow.



Patented mar. 26,1901..

' (Application lelug. 18, 1900.)

(lo Model.)

, UNITED STATES PATENT OFFICE.

REUBEN L. WIGHT,`OF ARBORHILL, IOWA.

DISK LHARRow.

SPECIFICATION forming part of Letters Patent No. 670,524, dated March 26, 1901. Application nea August 1s, 1900. serial N5. 27,263. (No model.)

To a/ZZ whom t Wawy-concern:

Beit known that I, REUBEN L. WIGHT, a citizen of the United States, residing at Arborhill, in the county of Adair and State of Iowa, have invented a new and useful Disk Harrow, of which the following is a specification. One object is to provide a disk cultivator upon which the driver on the seat can readily by means of a lever adjust the frames and disks in such a manner that the disks will be in alinement with the line of advance and practically inoperative and to facilitate cleaning the disks and moving about of the harrow from one place to another by means ot' the horses in such a manner that the disks will serve as traction-wheels and not turn the ground over which they are advanced.

A further object is to provide iexible frames that will give independent vertical motion to the disks in the front and rear axles and also allow thepole vertical motion relative to the frame and to relieve the horses necks from the weight of the pole.

A further object is to provide a disk harrow that will not clog or fill up while in operation in wet, muddy, or trashy ground by placing the disks on two separate axles on each side, putting four disks on each axle, and increasing the spaces between the disks and placing the disks on the axles -in such a manner that they will pulverize all the ground.

My invention consists in the construction, arrangement, and combination of parts, as hereinafter. set forth, pointed out in my claims, and illustrated in the Vaccompanying drawings, in which- Figure l is a top view showing the relative positions of the operative parts in their normal conditions as required for practical operation. Fig. 2 is a side elevation of the harrow, dotted lines indicating the upward motion allowed to the pole, that is pivotally connected with the center beam of the frame that supports the seat.

The letters A designate the four mating rotatable axles, to which the disks B are fixed in right-angled positions thereto. Each axle has a journal C, and the outer end portions of the two mating axles on each side of the harrow are slidably connected by means of a straight-jointed reach D, that can bend up and down at its central portion and is provided with bearings F at its ends, that surround the journals C in sucha manner that v.the axles' can rotate in the bearings and the bearings slide on the journals. The inner end portions of the axles are connected by jointed reaches D2, that are curved toward each other at their front ends and pivotally connected in such a manner as toallow lat` eral motion to their rear end portions as required to bring them into parallel position.

H is a straight beam, to which cross-pieces J are tlxed in parallel position. These crosspieces areV bent downward at their ends and terminate in standards K, adapted to be pivotally connected with the jointed reaches D, that have bearings m 'fixed thereto. A seat A2 is mounted on the rear end of the beam H, and a hand-lever n is fnlcrumed to the central part of the beam, and vits lower end is connected with the inner ends of the rear axles A by means of chains n in such a manner that a rearward motion of the long arm of the lever will draw the inner ends of the rear axles forward and inward as required to bring the front and rear axles in to rightangled positions to the beam H and the disks into alinement with the line of advance. The slidable connection ot the jointed beams D and D2 with the journals C of the axles allows such advantageous adjustment while the harrow is in motion. A brace P is pivotally connected with the journals C at the outer ends of the front axles and provided with an eye at its front and center and adapted to be jointly and pivotally connected with the front end of the beam H and a doubletree R by means of a bolt P2.

S is a pole pivotally connected with hingeirons S2, fixed to the front end of the beam H .in such a manner that the free end of the pole will'be allowed vertical motion. S3 is a loop fixed to the beam to restrict the motion of the pole. j

Having thus described the construction, functions, arrangement, and combinations of all the parts, the practical operation and utility of myinvention will be readily understood by persons familiar with the art to which it belongs, and

What I claim as new, and desire to secure by Letters Patent therefor, is-

IOO.

l. In a disk harrow, the combination of two mating rotatable axles havingr journals at some distance from their ends, disks fixed to the axles, reaches having joints at their eentral portions and bearings at their ends adapted to slide on said journals, and means for adjusting the axles to brin;lr them into, rightangled position with the line of advance in the manner set forth for the purposes stated.

2. In a disk harrow comprising a straight beam, a pole pivoted on top of the front end of the beam, four mating axles having fixed disks and journals at intermediate points between the disks, jointed reaches slidably connected with said journals and the inner reaches extended and pivotally connected, a brace pivotally connected to the outer end portions of the two front axles and also pivotally Connected at its center with the front end of the beam and a doubletree, a coupling-pin extended through the beam, the doubletree, and an eye in said brace, two crosspieees fixed to the beam and pivotally Connected with the jointed reaches, a seat mounted on the rear end portion of the beam, a hand-lever fulerumed to the beam in front of the seat and Connected with the inner ends of the rear axle by means of' ehains, all arranged and combined to operate in the man ner sel forth for the purposes stated.

REUBEN L. VVIGll'l. Witnesses:

J. M. DUNMIRE, ED. B. YAPLE. 

